diff --git a/tryton/gui/window/view_form/view/form_gtk/reference.py b/tryton/gui/window/view_form/view/form_gtk/reference.py
index a178d0e6ac..e0c694ef05 100644
--- a/tryton/gui/window/view_form/view/form_gtk/reference.py
+++ b/tryton/gui/window/view_form/view/form_gtk/reference.py
@@ -29,7 +29,6 @@ class Reference(Many2One, SelectionMixin, PopdownMixin):
         self.widget_combo.set_focus_chain([child])
 
         self.widget.pack_start(self.widget_combo, expand=False, fill=True)
-        self.widget.pack_start(gtk.Label('-'), expand=False, fill=False)
 
         self.init_selection()
         self.set_popdown(self.selection, self.widget_combo)